| Patents for C09B 31 - Disazo or polyazo dyes of the type a b c, a b c d, or the like, prepared by diazotising and coupling (1,445) |
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| 07/10/1979 | US4160764 Water-insoluble monoazo-dyestuffs for synthetic fibrous materials |
| 06/12/1979 | US4157893 Mono or disazo dye containing an amino-substituted pyrimidine ring |
| 05/30/1979 | EP0002104A1 Pleochroic dyes suitable for use in solution with liquid crystal materials for electro-optic device applications |
| 05/29/1979 | CA1055205A1 Dyeing of polyester fabric |
| 05/22/1979 | US4156086 Intermediates for azo dyes |
| 05/22/1979 | CA1055020A1 Disazo navy blue dyes for nylon |
| 05/15/1979 | US4154577 Uniformly disperse dyed water-swellable cellulosic fibers |
| 05/08/1979 | US4153343 Phenylazobenzothiazoles, phenylazobenzimidazoles, phenylazobenzoxazoles |
| 04/24/1979 | US4150943 Uniformly dyed water-swellable cellulosic fibers |
| 04/17/1979 | US4149851 Concentrated aqueous dye compositions containing a low molecular weight amide |
| 04/10/1979 | CA1052375A1 Disperse mono- and bisazo dyes derived from 2-amino-4,5-dicyanoimidazole |
| 03/27/1979 | US4146535 Azo dyes having a 3-cyano- or 3-carbamoyl-2,6-diamino-pyridine coupling component |
| 03/20/1979 | US4145341 Water-soluble azo dyes containing diaminopyrimidine coupler components |
| 03/20/1979 | US4145114 Liquid crystals, azo dyes, electrooptical device |
| 03/06/1979 | US4143035 Disazo dyestuffs having an alkoxy group on the first and/or second component |
| 02/27/1979 | US4141892 Process for preparing p-[[p-(phenylazo)phenyl]azo]phenol |
| 02/27/1979 | US4141890 Azo compounds having a 3-sulphomethyl-pyrazolone-(5) coupler component |
| 02/20/1979 | US4140683 Dyes from thienylazo compounds and cyclohexylaminoacylanilide couplers |
| 01/30/1979 | US4137193 Utilization of dyes for liquid crystal displays |
| 01/09/1979 | US4133806 Cellulose esters, polyesters |
| 12/26/1978 | CA1045122A1 Diazo compounds |
| 12/05/1978 | US4128545 Disperse, polyester |
| 11/07/1978 | US4124581 Disazo dyestuffs containing a thiazole central component |
| 10/24/1978 | CA1041091A1 Azo compounds |
| 10/10/1978 | CA1040193A1 Azo dyestuffs |
| 10/03/1978 | CA1039648A1 Visual method for the detection of syphilis and other treponemal diseases |
| 09/19/1978 | US4115380 Process for the preparation of dihydroxyphenylazophenylazophenyl dyestuffs |
| 09/19/1978 | CA1038862A1 Azoic dyes insoluble in water |
| 09/12/1978 | US4113720 Disperse azo dye with diaminopyrimidine coupling component |
| 08/29/1978 | US4110355 Anthraquinone compounds useful in photographic processes |
| 08/08/1978 | US4105653 Heteryl-azo-phenyl disperse dyestuffs containing a z-substituted benzolyloxyalkyl radical, wherein z is 2-cyanovinyl 2-cyanoethyl or 2-chloro-2-cyanoethyl |
| 07/18/1978 | US4101543 Benzene-azo-heterocyclic dyestuffs derived from alkyl aminocinnamates or aminocinnamide |
| 07/18/1978 | US4101542 Process for the selective destruction, by reduction, of p-coupled products of the 1-naphthol series |
| 07/11/1978 | US4099972 Dye image forming process using shifted azo dye developer |
| 06/27/1978 | US4097475 For polyesters and blends with cellulose |
| 05/30/1978 | US4092478 Triphendioxazine triazinyl dyes having phosphonic acid groups |
| 05/30/1978 | US4092308 4-Sulphomethyl substituted hydroxypyridone azo dyestuffs |
| 05/30/1978 | US4092307 Copper, nickel, cobalt or chromium |
| 05/30/1978 | US4092103 Process for dyeing nylon with lower alkyl ether-containing diazo dyes and product thereof |
| 05/23/1978 | USRE29640 Certain substituted 2,6-diamino-4-methyl-nicotinitriles the corresponding nicotinamides and derivatives thereof |
| 05/23/1978 | US4091021 Azo dyestuffs |
| 05/16/1978 | US4089850 Disazo dyes having a benzthiazolyl substituted phenol or naphthol coupling component |
| 05/02/1978 | US4087420 Azo dyestuffs containing an α-phenylamino isobutyric acid alkyl ester coupling component |
| 05/02/1978 | US4087245 Alkali metal or ammonium salt of dye reacted with hydroxy-, polyhydroxy- or polyalkoxy-alkylamine and an acid or salt of the amine |
| 04/18/1978 | US4085099 Azo dyes |
| 04/11/1978 | US4083844 Phenylazo orthocyano phenylazo or orthocyano phenylazo phenylazo containing dyestuffs |
| 04/11/1978 | US4083840 Disazo dyes having a 6-amino or substituted triazinylamino-1-hydroxynaphthalene-3-sulfonic acid coupling component radical |
| 04/11/1978 | US4083686 Uniformly dyed water-swellable cellulosic fibers |
| 04/11/1978 | US4083684 Azo dyes, washfastness, photostability, solvent resistance |
| 04/04/1978 | US4082742 Process for preparing an aqueous disazo dye concentrate |
| 03/28/1978 | US4081438 Anionic azo dyes having a 3-dibenzofuranyl diazo component radical optionally having A2-or 8-sulfo group |
| 03/21/1978 | USRE29585 Heavy metal complexes of azo dyestuffs containing a 2-amino-3-hydroxypyridine as coupling component |
| 03/14/1978 | US4078890 Process for the dyeing and printing of polyester material |
| 02/14/1978 | US4073781 Method of production of azo dyes from a quinone containing compound and a diazonium compound |
| 01/17/1978 | US4069012 Dyeing of polyester fabric with disazo dye |
| 01/10/1978 | US4068085 Yellow and red on polyesters and acrylics |
| 01/10/1978 | US4067865 Polyamides |
| 01/03/1978 | US4066637 Basic diaminopyridine-(3)-azo dyestuffs |
| 01/03/1978 | US4066388 Disazo dyes derived from 1-acyl-2,4-dihydroxybenzenes and metallized polyolefin dyed therewith |
| 12/27/1977 | US4065254 Diazo dyes, leather, cotton, wool |
| 12/20/1977 | US4063881 Synthetic polyamide fibres colored with acid azobenzene dyestuffs, containing a N-alkyl (or substituted alkyl)-n-sulphophenoxyalkylamino radical in the para position to the azo linkage |
| 12/20/1977 | US4063880 Anionic and nonionic |
| 12/13/1977 | US4062836 Yellow |
| 12/06/1977 | US4061464 Basic nitro dye, nonionic surfactant |
| 11/01/1977 | US4056523 Sulfonamido substituted |
| 11/01/1977 | US4056367 Dyeing petroleum, inks, fats, waxes, plastics |
| 10/25/1977 | US4055560 Sulfophenyl-azo-phenyl-azo-(4-hydroxyalkoxyphenyl) compounds |
| 10/04/1977 | US4052157 Use of water-soluble disazo dyestuffs for dyeing or printing synthetic textile material of polyamide or polyurethane fibers |
| 09/27/1977 | US4051118 Water-soluble disazo dyestuffs containing a 3- or 4-[pyrazolylene-(1)-benzoylamino]-6-sulphophenyl moiety |
| 09/20/1977 | US4049643 Dyes for polyesters |
| 09/20/1977 | US4049641 Dyeing polyamides, wool, and silk |
| 09/20/1977 | US4049393 Disazo dye dissolved in gasoline, kerosene, fuel oils, lubricants |
| 08/23/1977 | US4043751 Process for coloring fibers with water-insoluble polyfluoro azo dyestuffs |
| 08/16/1977 | US4042578 Azo dyes having 2,6-diaminopyridine derivatives as coupling components |
| 08/16/1977 | US4042577 Azo dyes having one or two triazinyl-or pyrimidyl-acetic acid ester or amide coupling component radicals |
| 08/09/1977 | US4041025 P-Aminoazo disperse dyes |
| 08/02/1977 | US4039529 Cycloaliphatic dicarbonyl containing azo dyestuffs |
| 08/02/1977 | US4039528 Blue, violet |
| 07/26/1977 | US4038268 Diazotization, coupling |
| 07/19/1977 | US4036824 Disazo dyestuffs containing A-O-alkylene-O-SO3 H group |
| 07/12/1977 | US4035143 Water-insoluble azo dyestuffs |
| 05/17/1977 | US4024126 Fastness properties |
| 05/17/1977 | US4023924 Concentrated aqueous dye compositions containing a low molecular weight amide and their use for dyeing paper |
| 05/10/1977 | US4022763 Sulfaphenyl-azo-phenyl-azo-aminophenyl dyestuffs |
| 05/10/1977 | US4022762 Water-soluble acid azo dyestuff containing a N-(p-sulphophenoxyalkyl)-N-alkyl amino group |
| 04/26/1977 | US4019858 Concentrated direct dye solution and process therefor |
| 04/19/1977 | US4018558 Mixture of disazo and anthraquinone dyes |
| 04/12/1977 | US4017478 Water-soluble azo dyes having a 2-acetoacetamidofluorenyl coupling component radical |
| 04/12/1977 | US4017477 3-Halogeno-6-hydroxy-pyridone-(2) azo dyestuffs |
| 04/05/1977 | US4016152 Azo dye with a 2,6-diamino-5-cyano-or-5-carbamoyl-pyridine coupling component |
| 03/29/1977 | US4014864 Heterocyclic substituted azo dyestuff |
| 03/22/1977 | US4013408 Exhaust process for the dyeing of synthetic organic textile materials in navy blue to black shades |
| 03/15/1977 | US4012193 Bisazomethine dyes for metal-modified polyolefins |
| 03/08/1977 | US4011209 Organic solvent-soluble azo dyes |
| 03/01/1977 | US4010151 Water insoluble mono azo and disazo dyes containing cinnamonitrile group |
| 02/22/1977 | US4009158 Mixtures of azo compounds having a 2-nitro-4-phenylsulfamoyldiphenyl amine nucleus |
| 02/22/1977 | US4009008 Disazo dye |
| 02/15/1977 | US4008216 Benzenesulphonylbenzenesulphonamideazophenyl-or-naphthyl-azolhydroxyloweralkoxyphenyl dyestuffs |
| 02/15/1977 | US4008213 Azo dyestuffs containing a cinnamonitrile residue |
| 02/01/1977 | US4006128 Azo dyestuffs containing aminopyridone coupling component |